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Australia's resource for control of worms, flies and lice in sheep,
and worms in goats

The Quick Quiz

This quick quiz tests your knowledge of sheep and goat parasites and their control. 

1. In temperate winter rainfall areas, when is a first summer drench typically given?

2. What are important steps to take when considering ceasing mulesing?

3. Can new lice infestations in sheep come from goats or birds?

4. What are the key benefits from treating goats with combination drenches?

>> Check the answers.

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FREE TESTS: Are your sheep blowflies resistant to chemicals?

Tests worth over $3,500 are currently being offered free this flystrike season (2018/2019) by NSW DPI, with joint funding from Australian Wool Innovation, to test the current level of pesticide resistance in fly populations. >> Read more.

State Outlooks for November 2018

Monitoring for worm and fly infestations are indicated in areas enjoying rain this month. Young stock could benefit from a summer drench.


What are important steps to take when considering ceasing mulesing?
Can birds spread sheep lice?
FREE TESTS for blowfly resistance to chemicals

New South Wales
>> full report

Worm egg counts are universally low, but testing for any rapid build-up in barber’s pole numbers is advised if storm activity continues. Flystrike is a major issue and Mycoplasma ovis is causing disease in some flocks.

>> full report

Heading into summer the focus is on the summer drench and drench resistance testing. Fly preventative treatments are indicated as the weather is warm and wet.

>> full report

Continue monitoring as rain this month could lead to barber’s pole infestations in young stock

Western Australia
>> full report

Drenching all sheep in summer can significantly increase drench resistance. Check worm egg counts in lambs and treat all weaners and hoggets with a summer drench. Monitor adult sheep. Barber’s pole could be of concern in the higher rainfall areas.

>> full report

Quarantine drench ‘mainland’ lambs when they arrive at your property and practice appropriate lice biosecurity measures as necessary.

South Australia
>> full report

Check worm egg counts in adult sheep every 2–3 months for changes in scour worm populations, and 3–4 weeks after rain in areas prone to barber’s pole infestations. Recent rainfall events could easily lead to flystrike.